:root {
  color-scheme: light;
  --bg: #f6f8f5; --surface: #fff; --surface-soft: #f3f6f3; --ink: #1c342c;
  --muted: #63716b; --line: #dde6df; --accent: #246c4f; --accent-hover: #19563e;
  --accent-soft: #e8f3ec; --unread: #f6faf6; --danger: #ae3434; --shadow: 0 8px 28px #183d2910;
  --radius: 16px; --dot: #34845f;
}
:root[data-theme="dark"] {
  color-scheme: dark;
  --bg: #111c18; --surface: #192720; --surface-soft: #203028; --ink: #e5eee7;
  --muted: #a0b2a6; --line: #34473a; --accent: #8ed0a5; --accent-hover: #acdfbe;
  --accent-soft: #233d2e; --unread: #1c2f24; --danger: #ff9e9e; --shadow: 0 8px 28px #0002; --dot: #8ed0a5;
}
* { box-sizing: border-box; }
[hidden] { display: none !important; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--bg); color: var(--ink); font-family: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; font-size: 14px; line-height: 1.6; transition: background .18s, color .18s; }
button, input, select { font: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
button { cursor: pointer; }
button:disabled { cursor: not-allowed; opacity: .5; }
button, a, input, select { transition: background .15s, border-color .15s, color .15s, box-shadow .15s; }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 4px; }
a { color: var(--accent); }
.icon-library { position: absolute; width: 0; height: 0; overflow: hidden; }
.icon { width: 20px; height: 20px; flex-shrink: 0; fill: none; stroke: currentColor; stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round; }
.page { width: min(100% - 48px, 960px); margin: auto; }
.site-header { min-height: 106px; display: flex; align-items: center; justify-content: space-between; border-bottom: 1px solid var(--line); }
.brand { display: inline-flex; gap: 10px; align-items: center; font-size: 27px; letter-spacing: -1px; font-weight: 750; text-decoration: none; color: var(--ink); }
.brand-icon { background: var(--accent); color: var(--surface); border-radius: 11px; display: grid; place-items: center; width: 38px; height: 38px; transform: rotate(-6deg); }
.brand-icon .icon { width: 23px; height: 23px; }
.brand-dot { color: var(--accent); }
.header-actions { display: flex; align-items: center; gap: 22px; }
.header-note { color: var(--muted); font-size: 12px; }
.icon-button { display: inline-flex; align-items: center; justify-content: center; border: 1px solid var(--line); border-radius: 50%; background: var(--surface); color: var(--ink); height: 40px; width: 40px; flex: 0 0 auto; }
.icon-button:hover { background: var(--accent-soft); border-color: var(--accent); }
.icon-button.small { width: 36px; height: 36px; border-radius: 9px; background: transparent; }
.theme-sun, [data-theme="dark"] .theme-moon { display: none; }
[data-theme="dark"] .theme-sun { display: block; }
main { width: min(100%, 764px); margin: auto; }
.intro { padding: 51px 0 31px; text-align: center; }
.eyebrow { font-size: 10px; font-weight: 700; letter-spacing: 1.6px; color: var(--accent); display: inline-flex; align-items: center; gap: 8px; }
.little-line { width: 19px; height: 1px; background: var(--accent); }
h1 { font-size: clamp(34px, 5vw, 49px); line-height: 1.12; font-weight: 650; letter-spacing: -2.1px; margin: 16px 0 17px; }
h1 span { color: var(--accent); }
.intro p { color: var(--muted); font-size: 13px; line-height: 1.8; margin: 0; }
.address-card { background: var(--surface); border: 1px solid var(--line); box-shadow: var(--shadow); border-radius: var(--radius); padding: 22px 24px 0; overflow: hidden; }
.card-heading { display: flex; justify-content: space-between; align-items: center; gap: 12px; margin-bottom: 19px; }
.card-heading h2 { font-size: 10px; letter-spacing: 1.4px; color: var(--muted); font-weight: 650; margin: 0; }
.status-pill { display: inline-flex; align-items: center; gap: 7px; color: var(--accent); border-radius: 20px; background: var(--accent-soft); padding: 3px 9px; font-size: 10px; font-weight: 650; }
.status-dot { width: 5px; height: 5px; display: inline-block; border-radius: 50%; background: var(--dot); flex-shrink: 0; }
.status-pill.offline { color: var(--danger); }
.status-pill.offline .status-dot { background: var(--danger); }
.address-line { display: flex; align-items: center; gap: 12px; padding-bottom: 23px; }
.address-icon { color: var(--accent); display: grid; place-items: center; }
.address-text { flex: 1; font-family: "SFMono-Regular", Consolas, monospace; font-size: clamp(15px, 2.4vw, 23px); font-weight: 600; letter-spacing: -.7px; overflow-wrap: anywhere; min-width: 0; }
.button { display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 43px; border-radius: 10px; padding: 10px 16px; font-size: 12px; font-weight: 650; border: 1px solid transparent; white-space: nowrap; text-decoration: none; }
.button.primary { background: var(--accent); color: var(--surface); }
.button.primary:hover { background: var(--accent-hover); }
.button.secondary { background: var(--surface); color: var(--ink); border-color: var(--line); }
.button.secondary:hover { background: var(--surface-soft); }
.button .icon { width: 16px; height: 16px; }
.address-bottom { margin: 0 -24px; background: var(--surface-soft); border-top: 1px solid var(--line); padding: 13px 24px; display: flex; justify-content: space-between; gap: 10px; align-items: center; }
.retention { display: inline-flex; align-items: center; gap: 5px; color: var(--muted); font-size: 10px; }
.retention .icon { width: 14px; height: 14px; margin-right: 3px; }
.retention strong { font-weight: 600; }
.address-actions { display: flex; align-items: center; gap: 11px; }
.text-button { background: transparent; color: var(--accent); border: 0; padding: 3px 0; display: inline-flex; align-items: center; gap: 6px; font-size: 11px; font-weight: 600; }
.text-button:hover { text-decoration: underline; text-underline-offset: 3px; }
.text-button .icon { width: 14px; height: 14px; }
.divider { width: 1px; height: 12px; background: var(--line); }
.inbox-section { margin-top: 33px; }
.inbox-toolbar { display: flex; justify-content: space-between; align-items: center; gap: 12px; margin-bottom: 14px; }
.inbox-heading, .inbox-tools { display: flex; align-items: center; gap: 9px; }
.inbox-heading h2 { margin: 0; font-size: 17px; font-weight: 650; letter-spacing: -.3px; }
.count-badge { background: var(--accent-soft); color: var(--accent); padding: 0 7px; min-width: 22px; line-height: 22px; border-radius: 6px; text-align: center; font-size: 11px; font-weight: 700; }
.sync-status { color: var(--muted); font-size: 10px; margin-right: 4px; }
.mail-panel { border: 1px solid var(--line); background: var(--surface); border-radius: var(--radius); overflow: hidden; }
.list-labels { display: flex; align-items: center; justify-content: space-between; padding: 13px 22px; border-bottom: 1px solid var(--line); font-size: 9px; font-weight: 600; letter-spacing: 1.25px; color: var(--muted); background: var(--surface-soft); }
.mail-row { display: flex; width: 100%; text-align: left; background: var(--surface); color: var(--ink); gap: 14px; align-items: flex-start; border: 0; border-bottom: 1px solid var(--line); padding: 20px 20px 20px 22px; position: relative; }
.mail-row:last-child { border-bottom: 0; }
.mail-row:hover { background: var(--accent-soft); }
.mail-row.unread { background: var(--unread); }
.mail-row.unread:hover { background: var(--accent-soft); }
.mail-row.unread::before { content: ""; position: absolute; left: 9px; top: 38px; width: 5px; height: 5px; background: var(--accent); border-radius: 50%; }
.sender-avatar { width: 39px; height: 39px; flex-shrink: 0; background: var(--accent-soft); color: var(--accent); font-weight: 700; font-size: 15px; border: 1px solid var(--line); border-radius: 12px; display: grid; place-items: center; }
.mail-content { flex: 1; min-width: 0; }
.mail-topline { display: flex; justify-content: space-between; align-items: baseline; gap: 10px; }
.mail-sender { font-size: 12px; font-weight: 450; text-overflow: ellipsis; white-space: nowrap; overflow: hidden; }
.mail-row.unread .mail-sender, .mail-row.unread .mail-subject { font-weight: 650; }
.mail-time { color: var(--muted); font-size: 10px; white-space: nowrap; }
.mail-subject { display: block; margin-top: 2px; font-size: 13px; font-weight: 450; text-overflow: ellipsis; white-space: nowrap; overflow: hidden; }
.mail-preview { color: var(--muted); font-size: 11px; text-overflow: ellipsis; white-space: nowrap; overflow: hidden; margin-top: 2px; }
.mail-tags { margin-top: 9px; display: flex; gap: 7px; flex-wrap: wrap; }
.otp-badge, .link-badge { font-size: 10px; padding: 2px 7px; border: 1px solid var(--line); border-radius: 5px; color: var(--accent); background: var(--surface); display: inline-flex; gap: 7px; align-items: center; }
.otp-badge strong { font-family: monospace; letter-spacing: 1px; }
.link-badge { color: var(--muted); }
.link-badge .icon { width: 11px; height: 11px; }
.empty-state { text-align: center; padding: 40px 20px 39px; }
.empty-illustration { width: 94px; height: 85px; margin: 0 auto 14px; position: relative; display: grid; place-items: center; }
.empty-illustration > .icon { width: 40px; height: 40px; color: var(--accent); transform: rotate(-10deg); }
.orbit { position: absolute; border: 1px solid var(--line); border-radius: 50%; inset: 0; }
.orbit-two { inset: 11px; background: var(--accent-soft); }
.empty-spark { position: absolute; color: var(--accent); right: 0; top: 0; font-size: 23px; background: var(--surface); width: 22px; height: 22px; line-height: 20px; }
.empty-state h3 { font-size: 15px; font-weight: 600; margin: 0 0 8px; }
.empty-state p { font-size: 11px; color: var(--muted); line-height: 1.9; margin: 0; }
.waiting-label { display: inline-flex; gap: 7px; align-items: center; font-size: 10px; color: var(--muted); margin-top: 19px; }
.inbox-caption { display: flex; justify-content: space-between; margin-top: 12px; color: var(--muted); font-size: 10px; }
.inbox-caption > span:first-child { display: flex; gap: 7px; align-items: center; }
.benefits { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; border-top: 1px solid var(--line); margin-top: 38px; padding-top: 25px; }
.benefit-icon { color: var(--accent); display: inline-flex; }
.benefit-icon .icon { width: 19px; height: 19px; }
.benefits h3 { margin: 9px 0 3px; font-size: 11px; font-weight: 650; }
.benefits p { color: var(--muted); font-size: 10px; line-height: 1.7; margin: 0; }
.privacy-note { display: flex; gap: 10px; padding: 15px; margin: 25px 0 35px; background: var(--surface-soft); border-radius: 9px; color: var(--muted); }
.privacy-note .icon { width: 15px; height: 15px; margin-top: 2px; }
.privacy-note p { margin: 0; font-size: 10px; line-height: 1.8; }
footer { display: flex; align-items: center; gap: 16px; border-top: 1px solid var(--line); padding: 23px 0 30px; color: var(--muted); font-size: 10px; }
.footer-brand { font-weight: 700; color: var(--ink); font-size: 15px; letter-spacing: -.5px; }
footer > span:last-child { margin-left: auto; }
.footer-dot { padding: 0 5px; }
.error-banner { background: var(--surface); border: 1px solid var(--danger); border-radius: 10px; color: var(--danger); padding: 12px 16px; margin: 16px 0; display: flex; align-items: center; gap: 10px; justify-content: space-between; font-size: 12px; }
.error-banner p { margin: 0; }
.error-banner .text-button { color: var(--danger); white-space: nowrap; }
.demo-banner { display: flex; justify-content: center; align-items: center; gap: 24px; padding: 9px 18px; background: var(--accent-soft); color: var(--accent); font-size: 11px; border-bottom: 1px solid var(--line); }
.demo-button { font-size: 11px; color: var(--accent); background: var(--surface); border: 1px solid var(--line); border-radius: 6px; padding: 4px 9px; font-weight: 600; }
.detail-view { margin-top: 25px; }
.detail-toolbar { display: flex; gap: 12px; justify-content: space-between; margin: 0 0 16px; }
.danger { color: var(--danger); }
.message-article { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 26px; overflow: hidden; }
.message-article h2 { margin: 0 0 20px; font-size: 24px; letter-spacing: -.6px; line-height: 1.4; overflow-wrap: anywhere; }
.sender-detail { display: flex; gap: 12px; align-items: center; font-size: 12px; overflow-wrap: anywhere; }
.small-text { font-size: 11px; }
.muted { color: var(--muted); }
.message-meta { margin: 20px 0; font-size: 11px; color: var(--muted); }
.message-meta div { display: flex; gap: 12px; margin-bottom: 5px; }
.message-meta dt { width: 85px; flex-shrink: 0; }
.message-meta dd { margin: 0; color: var(--ink); overflow-wrap: anywhere; }
.otp-card { border: 1px solid var(--line); background: var(--accent-soft); padding: 18px; border-radius: 12px; display: flex; justify-content: space-between; gap: 15px; align-items: center; margin-bottom: 18px; }
.otp-card .eyebrow { font-size: 8px; letter-spacing: 1px; }
.otp-value { display: block; font-size: 32px; letter-spacing: 6px; font-family: monospace; color: var(--accent); line-height: 1.5; }
.links-card { margin: 20px 0; }
.links-card h3, .body-heading h3 { font-size: 12px; margin: 0; }
.links-card > p { color: var(--muted); font-size: 10px; margin: 3px 0 10px; }
.link-item { display: flex; align-items: center; gap: 8px; padding: 10px; background: var(--surface-soft); border: 1px solid var(--line); border-radius: 9px; margin-top: 6px; }
.link-title { flex: 1; min-width: 0; overflow: hidden; white-space: nowrap; text-overflow: ellipsis; font-size: 11px; color: var(--muted); }
.link-item .button { font-size: 10px; padding: 6px 9px; min-height: 33px; }
.link-item .icon-button { width: 32px; height: 32px; border-radius: 7px; }
.link-item .icon { width: 14px; height: 14px; }
.body-heading { display: flex; justify-content: space-between; border-top: 1px solid var(--line); padding-top: 20px; margin-top: 22px; }
.safe-note { display: flex; align-items: center; gap: 6px; color: var(--muted); font-size: 10px; margin: 10px 0 12px; }
.safe-note .icon { width: 12px; height: 12px; }
.message-frame { width: 100%; min-height: 360px; border: 1px solid var(--line); border-radius: 9px; background: #fff; }
.message-text { white-space: pre-wrap; overflow-wrap: anywhere; font-family: inherit; font-size: 13px; line-height: 1.9; margin: 0; padding: 16px; border: 1px solid var(--line); border-radius: 9px; }
.detail-loading { text-align: center; padding: 60px; color: var(--muted); }
dialog { width: min(440px, calc(100vw - 32px)); border: 1px solid var(--line); border-radius: var(--radius); padding: 25px; background: var(--surface); color: var(--ink); box-shadow: var(--shadow); }
dialog::backdrop { background: #09251aa6; backdrop-filter: blur(3px); }
.dialog-header { display: flex; align-items: center; justify-content: space-between; gap: 10px; }
dialog h2 { font-size: 20px; letter-spacing: -.6px; margin: 0; }
dialog p { color: var(--muted); font-size: 12px; margin: 12px 0 20px; }
dialog label { display: block; font-size: 12px; font-weight: 600; margin: 14px 0 6px; }
dialog input, dialog select { width: 100%; background: var(--bg); color: var(--ink); border: 1px solid var(--line); border-radius: 9px; padding: 11px 12px; font-size: 14px; }
.input-hint { display: block; font-size: 10px; color: var(--muted); margin-top: 8px; }
.full-width { width: 100%; }
dialog .form-error { color: var(--danger); margin: 10px 0; font-size: 11px; }
.confirm-actions { display: flex; gap: 10px; justify-content: flex-end; }
.toast { position: fixed; bottom: 26px; left: 50%; transform: translateX(-50%); background: var(--ink); color: var(--bg); box-shadow: var(--shadow); border-radius: 12px; padding: 12px 20px; z-index: 100; display: flex; align-items: center; gap: 9px; width: max-content; max-width: calc(100vw - 30px); font-size: 12px; }
.toast .icon { width: 16px; height: 16px; }
.skeleton-row { display: flex; gap: 13px; padding: 20px; border-bottom: 1px solid var(--line); }
.skeleton-row:last-child { border: 0; }
.skeleton-row > span { width: 40px; height: 40px; border-radius: 10px; }
.skeleton-row > div { flex: 1; }
.skeleton-row i { display: block; height: 10px; width: 60%; margin: 5px 0 10px; border-radius: 4px; }
.skeleton-row i:last-child { width: 85%; }
.skeleton-row > span, .skeleton-row i { background: linear-gradient(90deg, var(--surface-soft) 25%, var(--line) 50%, var(--surface-soft) 75%); background-size: 200% 100%; animation: shimmer 1.6s infinite; }
@keyframes shimmer { to { background-position: -200% 0; } }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }
@media (max-width: 620px) {
  .page { width: calc(100% - 32px); }
  .site-header { min-height: 82px; }
  .header-note { display: none; }
  .intro { padding: 34px 0 27px; }
  h1 { letter-spacing: -1.5px; }
  .intro p { font-size: 12px; max-width: 340px; margin: auto; }
  .desktop-br { display: none; }
  .address-card { padding: 18px 16px 0; }
  .address-line { flex-wrap: wrap; gap: 8px; padding-bottom: 18px; }
  .address-text { font-size: 18px; }
  .address-line .button { width: 100%; margin-top: 9px; min-height: 42px; }
  .address-bottom { flex-direction: column; gap: 10px; margin: 0 -16px; padding: 12px 16px; }
  .retention { font-size: 10px; }
  .address-actions { width: 100%; justify-content: center; gap: 15px; }
  .address-actions .text-button { min-height: 29px; }
  .inbox-section { margin-top: 27px; }
  .sync-status { display: none; }
  .mail-row { gap: 10px; padding: 16px 13px 16px 19px; }
  .mail-row.unread::before { left: 6px; top: 32px; }
  .sender-avatar { width: 33px; height: 33px; font-size: 13px; border-radius: 10px; }
  .mail-time { font-size: 9px; }
  .mail-topline { gap: 6px; }
  .mail-preview { font-size: 10px; }
  .list-labels { padding: 12px 17px; }
  .empty-state { padding: 32px 14px; }
  .empty-state p { font-size: 10px; }
  .inbox-caption { font-size: 9px; }
  .benefits { gap: 12px; margin-top: 28px; padding-top: 22px; }
  .benefits h3 { font-size: 10px; line-height: 1.6; }
  .benefits p { font-size: 9px; }
  .privacy-note { margin: 21px 0 27px; padding: 12px; }
  footer { flex-wrap: wrap; gap: 8px 12px; font-size: 9px; }
  footer > span:last-child { width: 100%; margin-left: 0; }
  .demo-banner { flex-direction: column; gap: 6px; font-size: 10px; padding: 8px; text-align: center; }
  .message-article { padding: 18px 15px; }
  .message-article h2 { font-size: 21px; }
  .detail-toolbar .text-button { font-size: 10px; }
  .otp-card { padding: 13px; gap: 8px; flex-wrap: wrap; }
  .otp-value { font-size: 29px; letter-spacing: 3px; }
  .otp-card .button { padding: 8px 10px; font-size: 10px; }
  .otp-card .eyebrow { font-size: 7px; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; animation: none !important; transition: none !important; }
}